VORSIM model building software for
Microsoft Excel can be a)
downloaded directly from this website or b)
ordered on an installation CD from the shopping cart (VS 14).Both methods include VORSIMsoftware, demonstration models, and utilities that are installed on your
computer.Tutorials
and the Users Guide are
accessed on the VORSIM website.Several video tutorials consist of sequential screen captures of
VORSIM model building operations.They
give an overview of the VORSIM modeling system and illustrate several key
model building and operation activities.Demonstration models illustrate VORSIM features and can be rebuilt as
learning exercises

Utilities:These are programs that perform useful
operations associated with VORSIM model-building.They are all accessed from the VORSIM
Utilities window.Three utilities help
with installation problems:VBA Test (VBAtest.xls)  Program that
tests whether VBA (Visual Basic for Applications) is installed and useable
with Excel on your computer.Check Stray Files (Strayfile.xls) 
Program which finds duplicate VORSIM files on your computer which may cause
problems.The program allows you to
delete these unwanted files.Installation Check (Installchk.xls) 
A program that checks to make sure VORSIM programs and model files are in the
location intended during installation.Other utilities help with modeling activities:Duplicate
a Model (Duplicate.xls)  A program that duplicates an existing VORSIM
model, giving it a different name and location.This allows you to build another model by
changing the structure of an existing (renamed) one, therefore taking
advantage of work already done.Data Transfer (Movedata.xls)  A
program that allows you to set up and automatically transfer data from Excel
files (however created) to your model data workbook.Once the transfer scheme is set up, you
will be sure that the file data resides in the correct variable cell in your
model data workbook.Create Data Workbook (Crdbook.xls) 
A program that takes an existing matrix of data for a static model and
creates a VORSIM data workbook.Growth Rate Calculator (Vorgrow.xls)
 Program to calculate growth rates from time series data in a model data
workbook.Growth projections are also
made and charted.Model Directory (Modelist.xls)  Program that prepares a current
list of all models and solutions in the model directory (VMOD) along with the
dates of creation of the models and solutions.There are also programs describing how to
install the alternative Excel solver.There is a line drawing program that is useful for supply demand
diagrams.The Utilities window also
access information files on an overview of VORSIM, practical installation
suggestions, security settings, solver parameters, descriptions of the
demonstration models, and information about simple measures of producer and
consumer surplus.You can also access
any of the VORSIM control screens from the Utilities Window.Models themselves in the VMOD folder are
activated directly from any of the control screens.

Security:For VORSIM 14 macros to operate, security
must be set to the lowest level and boxes must be marked to trust all add-ins
and VBA projects.Different security
and virus protection programs may have different requirements.For some security programs, real time
scanning must be turned off.A security tutorial
shows how to set (relax) the security settings so that the VBA macros driving
VORSIM can operate in Excel.